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“Edible racers would be a smash hit at learning co-ops classes, science competitions and birthday parties. Who will win the main event: Chocolate Thunder, Spud Racer, Mallow Magic, Bun Fun, or Rice Car? Start your engines!” —Practical Homeschooling
Bobby Mercer has been a high school physics teacher for more than two decades. He is the author of The Flying Machine Book and Smash It! Crash It! Launch It!